Laser Cutting Machine Designers
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The greatest use of industrial laser systems is in metal cutting, primarily two axes profiling
of sheet goods that might otherwise have been blanked out by punch press, or
fabricated by hand after laborious layout of the pattern. Currently most metal
cutting falls within 0.375 inch and thinner, although C02 lasers now have the
capability of being competitive with plasma arc cutting metals 0.500 inches
and greater. The principal limiting factor to widespread use of laser metal
cutting is manufacturing methodology. Laser cutting is ideal for batch
processes, just-in-time, or low to medium volume production. Most laser
cutting work is performed on generic or multipurpose material handling
industrial laser systems, as opposed to dedicated automation controlled
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Laser light may be used to cut and score a wide variety of materials. With a
laser cutting machine like this, paper and plastic can easily be scored and
cut very precisely. Even plywood up to 1/4" thick can be cut on this small
machine. Larger industrial machines can cut metal as well. Typically the
plotting rate and power of the laser are modulated to select various levels of
scoring and cutting.
This particular machine process is used primarily to create architectural models out
of plastic. It has a cutting area of 3 feet by 2 feet, but larger machines
have cutting areas of 8 feet by 4 feet. The major components are the gas
tanks, the laser plotter itself, and the controller.
These tanks provide nitrogen gas that is used to limit the burn rate when
flamable materials like paper are being cut.
A program on this PC reads a user's AutoCad DXF file from a floppy disk and
controls the laser cutter. Profiles for the current material being cut are set
by the operator here.
Scoring and multiple cutting layers are indicated by labeling the layers 1S,
2C and 3C in the input DXF file. The lines to be scored are given by the layer
labeled 1S. All scoring is done before cutting is started. The width of the
cuts and scores is approximately 0.009" on this machine.
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Efficient Designs, Incorporated - Links
LIOA - Also Known As The: Laser Institute of America
ASLMS - AKA The: The American Society for
Medicine & Surgery, Inc.
1638 South Research Loop - Suite 100
Tucson, Arizona 85710
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Some content on this page excerpted from the article:
The Laser Cutting Machine
By: Paul Haeberli,